Optical constants of oilfield wastewater

The optical properties of oilfield wastewater play an important role in the study of oilfield wastewater. Optical constants are the important parameters of optical properties, which are usually obtained by measuring transmittance spectra. Transmittance spectra of oilfield wastewater in the wavelength range of 190-900 nm at normal incidence were measured by a TU-1900 double beam ultraviolet visible spectrophotometer. The optical constants of oilfield wastewater were calculated by the double thickness method. The results show that the optical constants of oilfield wastewater with different oil content are different. The refractive index of oilfield wastewater increases with oil content increasing, and the values of them are in the range of 1.06-1.17. The absorption index of oilfield wastewater increases with the increase of oil content, and the values of them are in the range of 2.70 × 10−7- 7.60 × 10−7.